I just had a simular no spark issue. Turned out to be the pick up coil in the distrib had a bad ground. Isn't one of the wires going into the coil a ground? Maybe I missed something? New to Jeeps, just trying to learn some stuff.

I also replace the crankshaft sensor (CKS) at the bell housing (drivers side top). That will also give you no spark.

Did you put on a new one with the swap? I hear they are easily damaged. They are about $60 in the auto parts store, $16 on amazon and a lot of guys say to use the dodge or Chrysler part (not sure what number).

they make a push button with alligator clips that connect to pos and neg terminal. Us shade tree guys use a rubber handle screw driver to bridge the pos and neg terminals. don't do it with a metal tool in your hand or she will bite you. Also ensure you're not covered in fuel.

but, is your block grounded to the frame? with the rubber in engine mounts you may want to run a ground strap from the block to the frame depending... If you have a continuity tester (beep setting on voltmeter) then touch one end to the - on the battery and the other end to your block, it should beep.